Data di Pubblicazione:
2011
Citazione:
Contaminazione ambientale da Listeria monocytogenes in caseifici ovini industriali / Mura, E; Penna, C; Spanu, V; Spanu, Carlo; Cossu, F; Scarano, Christian; DE SANTIS, Enrico Pietro Luigi. - In: ATTI DELLA SOCIETÀ ITALIANA DELLE SCIENZE VETERINARIE. - ISSN 1825-4454. - (2011), pp. 362-364.
Abstract:
L. monocytogenes (Lm) contamination in sheep’s cheese produced from thermized
or pasteurized milk can be traced back to post-process environment. Lm prevalence and distribution
on environmental surfaces, on Ricotta salata and Pecorino Romano (PR) surfaces were investigated
in two sheep’s milk cheese factories. PFGE typing was also carried out on 70 Lm isolates, to trace
the strains in environments and product surfaces. Lm prevalence ranged between 22.7% and 30.0%
in the environmental samples whereas it was 7.1% and 9.1% on PR rind. The washing and ripening
areas were the most contaminated. Lm isolated strains were clustered in 8 PFGE groups and the
same strains were detected in the PR rind and in the environmental surfaces.
or pasteurized milk can be traced back to post-process environment. Lm prevalence and distribution
on environmental surfaces, on Ricotta salata and Pecorino Romano (PR) surfaces were investigated
in two sheep’s milk cheese factories. PFGE typing was also carried out on 70 Lm isolates, to trace
the strains in environments and product surfaces. Lm prevalence ranged between 22.7% and 30.0%
in the environmental samples whereas it was 7.1% and 9.1% on PR rind. The washing and ripening
areas were the most contaminated. Lm isolated strains were clustered in 8 PFGE groups and the
same strains were detected in the PR rind and in the environmental surfaces.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
Listeria monocytogenes ; environmental samples; sheep’s cheese factories; PFGE
Elenco autori:
Mura, E; Penna, C; Spanu, V; Spanu, Carlo; Cossu, F; Scarano, Christian; DE SANTIS, Enrico Pietro Luigi
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